2. it costs edgar $2.65 one way to ride the bus to work. he uses the bus to go to and from work four days per week. he buys a bottle of water that costs $1.45 on his way to work each day. how much does it cost edgar to ride the bus and buy water for one week

In this case, you have to multiply the price of the one way journey ($2.65) by 8 (as this is the number of individual journeys made in one week. It's gives you $21.20. As he has 1 bottle of water at $1.45 each day for four days, you have to multiply these together, giving you $5.80 You then have to add together $21.20 and $5.80, giving you $27. Therefore, it costs Edgar $27 a week